340 Journal of the Asiatic Soc. of Bengal. [N.S., XVI, 1920.] 
C=15:20%, H=3:27%, N=465% and Sb=33:80% 
Water of crystallization = 12°25% 
Calculated for CO (NH,),° (C, H,*Sb0°0,).°5 H,0 which is 
assumed to be the abe: formula of the compound obtained : 
a 15:00%, H=3'33%, N=3°88% and Sb=33'33% 
Water of Oe ale 12°50% 
So far as I am aware, there is no reference to this 
compound in the literature on compounds of urea and 
antimony. 
This salt is being used by me in the treatment of kala- 
azar. Its toxicity to lower animals seems to be rather low 
and ie gh ga are in progress to determine its toxic and 
curative dos 
The solubility curve of the compound in water is shown 
in the peed eel haw Bs cha 
ebted to Mr. Parimal Sen, M.Sc., for helping me 
psbikie oll of this compound, and in working out its 
solebakey curve. 
